package com.example.demo1.common;



import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;

import java.io.Serializable;

/**
 * 通用服务器返回对象
 * @param <T>
 */
@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL) //加上此注解，当序列化json时，如果对象是null，key也不显示
public class ServerResponse<T> implements Serializable {

    private int status;
    private int total;
    private String msg;
    private T data;

    private ServerResponse() {
		super();
	}

	private ServerResponse(int status) {
        this.status = status;
    }

    private ServerResponse(int status, T data) {
        this.status = status;
        this.data = data;
    }

    private ServerResponse(int status, T data, int total) {
        this.total = total;
        this.status = status;
        this.data = data;
    }

    private ServerResponse(int status, String msg) {
        this.status = status;
        this.msg = msg;
    }

    private ServerResponse(int status, String msg, T data) {
        this.status = status;
        this.msg = msg;
        this.data = data;
    }

    private ServerResponse(int status, String msg, T data, int total) {
        this.total = total;
        this.status = status;
        this.msg = msg;
        this.data = data;
    }

    @JsonIgnore //加上此注解，使之不在json序列化结果当中
    public boolean isSuccess(){
        return this.status == ResponseCode.SUCCESS.getCode();
    }

    public int getStatus(){
        return status;
    }

    public int getTotal() {
        return total;
    }

    public String getMsg(){
        return msg;
    }

    public T getData(){
        return data;
    }

    public static <T> ServerResponse<T> createBySuccess(){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode());
    }

    public static <T> ServerResponse<T> createBySuccess(T data){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),data);
    }

    public static <T> ServerResponse<T> createBySuccess(T data, int total){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),data,total);
    }

    public static <T> ServerResponse<T> createBySuccessMessage(String msg){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),msg);
    }

    public static <T> ServerResponse<T> createBySuccess(String msg, T data){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),msg,data);
    }

    public static <T> ServerResponse<T> createBySuccess(String msg, T data, int total){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),msg,data,total);
    }

    public static <T> ServerResponse<T> createByError(){
        return new ServerResponse<T>(ResponseCode.ERROR.getCode(),ResponseCode.ERROR.getDesc());
    }

    public static <T> ServerResponse<T> createByErrorMessage(String errorMessage){
        return new ServerResponse<T>(ResponseCode.ERROR.getCode(),errorMessage);
    }

    public static <T> ServerResponse<T> createByErrorCodeMessage(int errorCode, String errorMessage){
        return new ServerResponse<T>(errorCode, errorMessage);
    }
}
